Depends on the effect you want on the plastic bodies, i sand them all with some 800 grit, then go to painting. No primer, or white coat will make them more translucent, and be carful with the e-tex, i've never used it, but have cleared some baits with D2T, and killed the action of them due to the extra weight (wee and pee wee warts), not sure what the Centari is. I use two coats of Dick Nite Lurecoat